4 ways the UK can reverse Brexit if it really, really wants to

1. Ignore the vote

Though a majority of the British have said they don’t want to remain part of the EU, the referendum result does not bind the government legally to trigger Article 50 of the Lisbon Treaty, which sets out the formal steps to be taken to leave the EU.

2. Sign a petition

Almost 1.6 million people, and counting, have signed a petition that asks the government to add a rule to the Brexit vote-counting that would trigger another referendum. The petitioners want the UK government to accept a leave vote only if 60% vote to leave and there is at least a 75% voter turnout. With more than 100,000 signatures, the Parliament is now bound to debate the petition.

3. Another general election

The Fixed Term Parliament Act provides for two ways to trigger a new general election, via a no-confidence motion or if two-thirds of members of the House of Commons resolve to have an early election.

4. A significant change in conditions

This is the most likely route by which Brexit could be reversed.
Currently, the UK is part of the EU’s single market, which in return for following EU regulations, allows the UK to trade within the EU with far fewer barriers. Over the next two years, after the Article 50 notification is given and the UK decides to leave the EU, there will be negotiations with the EU to set up trade deals and other rules, so that the UK, despite leaving the EU, can continue to trade with EU countries.